John ernst uhl



tttiitt JOHN ERNST UHL, OF RENOVG, PENNSYLVANIA.

Letters Patent No. 112,515, dated March '7, 1871.

IMPROVEMENT IN LUBRICATORS.

The Schedule referred to inthese Letters Patentl and making pau-t of thesame.

I, JOHN ERNST UBL, of Renovo, in the-county of Clinton and State ofPennsylvania, have invented a new and improved Lubricator forSteam-Engines andl other Machinery, of which the following is a specifivcation.

Nature ami Objects of the Iiwmztion.

My lubrcator is provided with a customary reser voir, sui-mounting ahollow stem, which may be screwed into the cap of a valve-chest,journal-box, or other object tu which the lubricator is to he applied.Within the hollow stem is 'a vertically-sliding rod, having on itsperiphery one or more grooves' or notches, so located that as the rodapproaches its upper position they willreceive a supply of oil, aud asthe rod descends they will deliver the said oil into one or more canals,by which it is conducted to the bearing or within the steam-chest orcylinder, sthe case may be.

' The rod is made hollow, to conduct air or steam to 'the reservor abovethe oil, so that the pressure within the reservoir may equal that wherethe oil is to be delivered, whether the said pressure be that of -thatmosphere or of, boiler-steam, I The rod is thrown up by a tappetmovement, and may be made to descend by its own gravity or by means of aspring.

Bymeans of an adjustable nut or collar ou the rod the capacity` of theoil-notch or groove may be regulated as required.

In order tolteep the oil from congealing or becoming thick -iu coldweather I introduce within the reservoir a metallic pipe containingsteam, which may be taken directly from the boileil orti-om thevalve-chest, or even from the exhaust, and is provided at its lowestpart with a cock for the `purpose of discharging water of condensation.If exhaust steam is used this cock may he dispensed with and the steammay be discharged into the open air.

For the purpose of indicating at all times the quantity of oil in thereservoirl provide a tube of transparent material, communicating at topand bottoni with the interior of the reservoir, and pat-hed at its ends.

Description of the Accompanying Drawing.

Figure l is a vertical longitudinal section cfa steamchest and valvewith my luhricatorappl'ied.

.Figure 2 is a vertical section of the luhricator detached, the rod andthe upper part of' the cap being shown in elevation.

Figure 3 is an elevation of part of the rod, show ing in section anadjustable nut or collar, by which the capacity of the oil-groove may beregulated as required.

Figure 4 isa vertical section of the reservoir, illustrating my mode ofapplying a steam-pipe lfor heating, apd a vtransparent gauge-tube toindicate the quantity of oil.

Figure 5 is a horizontal section at x x, iig. 4.

General Description..

A represents a steam-chest of common form.

B, its cap. G, a portion of the steam-cylinder, ou which is seated thevalve D.

E is the oil-reservoii of my lubricator, the stem F of which is screwediuto the cap B of the valve-chest, or secured in any convenient manner.

Within the stem E works a hollow rod, G, fitting the cavity in the saidstein. A packing may be ap plied to this rod, as shown at g, but this isnot always found requisite.

E is a collar, limiting the descent of the tube G. This collar mayeither be. made in one ypiece with the tube, or may be screwed thereon,as illustrated inA iig. 3, for the purpose of changing the capacity ofAthe groove g', by which oil is carried out of the reservoir each timethe rod descends.

I is a tube attached to the top of' the hollow rod Gr, and communicatingwith the interiorthereof, through which steam or air (as the case maybe) is admitted above the oil, to equalize the pressure within thereservoir with that at the point where the oil is delivered.

J represents a bell-crank lever, operated by a tappet, K, on the valveor slide or other object to' be lubricated.

L is a spring, operating ou a follower, M, to de-A press the rod whenreleased,

N is an opening. to conduct the oil through the stem F; or, instead ofthis, branching pipes N, tig. 2, `may be employed for 'the purpose ofoiliug the guides of a cross-head or any similar piece of machinery.

P is a steam-pipe 4passing through the interior of the reservoir toprevent the cooling of the oil. The water of condensation in this pipemay be drawn'oii' through a cock, Q. n

Within a recess, It, in the reservoir E, is applied a glass tube, S, theupper and lowerends ot' which are packed steam-tight by means of'rings ss', of leather or other proper material.

r i" are apertures, through which communication is afforded between thetube Sand the inside of the reservoir, above and below.

A screw, T,lls the aperture iu'the top of the rese ervuinthrough whichthe tube S is introduced, and bears upon the upper packing s.- The said'screw is perforated at its lower end longitudinally and transversely,as shown in iig. e, in order to: communicate with the aperture fr andwith the interior of the tube.

U is a, screw-ca to close the 'top of the reserveir.

Claims.

low the oil, as explained.

3. The tappet movement K J, in combination with theverticallyfreciprocating rod or tube G and reservoir E, as described.

4. The combined arrangement of; the guugeetube S, recess R,packing-rings s s', communication-ports r r', and screw-'cap T, toindicante the quantity of oil contained in the reservoir.

b inatiou with the reservoir E, iu the manner und for the purposesspecified.

Witnesses: J. E. UHL.

WM. H. BRERETON, J r.,

OCTAVIUS KNIGHT.

the reservoir and equalize 'the pressure above and be' 5. The steam-pipeP and cock Q, employed iu eo1n-V

